<?php

/*
	Question2Answer (c) Gideon Greenspan

	http://www.question2answer.org/

	
	File: qa-include/qa-ajax-click-comment.php
	Version: See define()s at top of qa-include/qa-base.php
	Description: Server-side response to Ajax single clicks on comments


	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	More about this license: http://www.question2answer.org/license.php
*/

require_once QA_INCLUDE_DIR . 'qa-app-cookies.php';
require_once QA_INCLUDE_DIR . 'qa-app-format.php';
require_once QA_INCLUDE_DIR . 'qa-app-users.php';
require_once QA_INCLUDE_DIR . 'qa-db-selects.php';
require_once QA_INCLUDE_DIR . 'qa-page-question-view.php';
require_once QA_INCLUDE_DIR . 'qa-page-question-submit.php';


//	Load relevant information about this comment

$commentid = qa_post_text('commentid');
$questionid = qa_post_text('questionid');
$parentid = qa_post_text('parentid');

$userid = qa_get_logged_in_userid();

list($comment, $question, $parent, $children) = qa_db_select_with_pending(
    qa_db_full_post_selectspec($userid, $commentid),
    qa_db_full_post_selectspec($userid, $questionid),
    qa_db_full_post_selectspec($userid, $parentid),
    qa_db_full_child_posts_selectspec($userid, $parentid)
);


//	Check if there was an operation that succeeded

if (
    (@$comment['basetype'] == 'C') &&
    (@$question['basetype'] == 'Q') &&
    ((@$parent['basetype'] == 'Q') || (@$parent['basetype'] == 'A'))
) {
    $comment = $comment + qa_page_q_post_rules($comment, $parent, $children, null); // array union

    if (qa_page_q_single_click_c($comment, $question, $parent, $error)) {
        $comment = qa_db_select_with_pending(qa_db_full_post_selectspec($userid, $commentid));


        //	If so, page content to be updated via Ajax

        echo "QA_AJAX_RESPONSE\n1";


        //	If the comment was not deleted...

        if (isset($comment)) {
            $parent = $parent + qa_page_q_post_rules($parent, ($questionid == $parentid) ? null : $question, null, $children);
            // in theory we should retrieve the parent's siblings for the above, but they're not going to be relevant
            $comment = $comment + qa_page_q_post_rules($comment, $parent, $children, null);

            $usershtml = qa_userids_handles_html(array($comment), true);

            $c_view = qa_page_q_comment_view($question, $parent, $comment, $usershtml, false);

            $themeclass = qa_load_theme_class(qa_get_site_theme(), 'ajax-comment', null, null);


            //	... send back the HTML for it

            echo "\n";

            $themeclass->c_list_item($c_view);
        }

        return;
    }
}


echo "QA_AJAX_RESPONSE\n0\n"; // fall back to non-Ajax submission if something failed


/*
	Omit PHP closing tag to help avoid accidental output
*/